.qs{
    position: relative;
    padding-right: 34px;
    color: #fff;
    line-height: 40px;
    display: flex;
    align-items: center;
    font-weight: 300;
    font-size: 20px;
}
.qs:after{
    content: '.';
    display: inline-block;
    font-size: 0;
    line-height: 0;
    width: 24px;
    height: 24px;
    background: url(https://mat1.gtimg.com/news/images/inews/2020/feiyan/18/img/icon_qs2.png);
    background-size: 100% 100%;
}